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The fabrication and analysis of a PbS nanocrystal:C-60 bilayer hybrid photovoltaic system
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Dissanayake, D. M. N. M., Hatton, Ross A., Lutz, T., Curry, R. J. and Silva, S. R. P. (2009) The fabrication and analysis of a PbS nanocrystal:C-60 bilayer hybrid photovoltaic system. Nanotechnology, Vol.20 (No.24). Article no. 245202. doi:10.1088/0957-4484/20/24/245202 ISSN 0957-4484.
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Official URL: http://dx.doi.org/10.1088/0957-4484/20/24/245202
Abstract
A near-infrared sensitive hybrid photovoltaic system between PbS nanocrystals (PbS-NCs) and C-60 is demonstrated. Up to 0.44% power conversion efficiency is obtained under AM1.5G with a short circuit current density (J(sc)) of 5mA cm(-2) when the PbS-NC layer is treated in anhydrous methanol. The observed Jsc is found be approximately one-third of the maximum expected from this hybrid configuration, indicating the potential for further optimization. Crucial for device operation, a smooth film of nanocrystals is seen to form on the hole transporting poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer deposited on the transparent electrode, facilitated through an ionic interaction between nanocrystal capping ligands and the PEDOT:PSS. The formation of the open circuit voltage in this system is seen to be influenced by an interfacial dipole formed at the hole-extracting electrode, providing insights for further optimization.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
| Journal or Publication Title: | Nanotechnology | ||||
| Publisher: | Institute of Physics Publishing Ltd. | ||||
| ISSN: | 0957-4484 | ||||
| Official Date: | 17 June 2009 | ||||
| Dates: |
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| Volume: | Vol.20 | ||||
| Number: | No.24 | ||||
| Number of Pages: | 5 | ||||
| Page Range: | Article no. 245202 | ||||
| DOI: | 10.1088/0957-4484/20/24/245202 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Royal Academy of Engineering/EPSRC Research Fellowship |
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